How to Choose multispan greenhouses?

A multi-span greenhouse is a popular type of greenhouse that is composed of several connected sections or bays. Compared to a single-span greenhouse, a multi-span greenhouse has a larger overall growing area, providing more opportunities for crop production, and making it an attractive option for planting growers.

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In this article, we will explore what a multi-span greenhouse is, its benefits, and what you need to consider before building one.

What is a Multi-Span Greenhouse? The Advantages?

A multi-span greenhouse consists of several connected bays or sections, typically made of steel or aluminum, with arched roofs and straight sidewalls. Each bay is usually 4-6 meters wide, and the length can be customized to fit the grower’s needs.

One of the main advantages of a multi-span greenhouse is the ability to achieve a large growing area, as several bays can be joined together to create a single, continuous structure. This type of greenhouse can also be equipped with various heating, cooling, and ventilation systems to provide optimal growing conditions for crops.

In addition, multi-span greenhouses are built with high-quality materials such as steel or aluminum, making them durable and long-lasting. They can withstand extreme weather conditions and provide a secure growing environment for your crops.

How to Build a Multi-Span Greenhouse: What to Consider

You’ve known whether you’re a small-scale farmer looking to expand your operation or a commercial grower in need of more growing space, a multi-span greenhouse can be a valuable investment. However, building a multi-span greenhouse is a complex project that requires careful planning and consideration of various factors.

1. Climate: Before choosing a multi-span greenhouse, it is important to consider the local climate conditions, such as temperature, humidity, and wind. This will help determine the type of covering material and heating, cooling, and ventilation systems required for optimal crop production.
2. Crop type: The type of crop to be grown in the greenhouse is another crucial factor to consider. Some crops may require specific environmental conditions, such as temperature, light, and humidity, which may affect the design and equipment of the greenhouse.
3. Structural design: The structural design of the greenhouse, including the shape, size, and materials, can also affect its performance and longevity. For example, a larger greenhouse may require a stronger frame and foundation to withstand wind and snow loads.
4. Your budget: The cost of a multi-span greenhouse can vary widely depending on factors such as size, materials, and equipment. It is important to establish a budget and consider the return on investment of the greenhouse before making a purchase.

Conclusion

A multi-span greenhouse is an excellent option for growers looking to increase their crop production capacity. By understanding the key features and considerations of this type of greenhouse, growers can make an informed decision and choose the right multi-span greenhouse for their needs.

The multi-span greenhouse is an upgraded style of the single arch shed due to its ultra-high utilization rate and level of mechanization and automation. Secondly, in terms of the environmental control system of multi-span greenhouses, electric shading, electric rolling film (window opening) ventilation, electric insulation quilts, and electric fan water curtain cooling have been implemented. The environmental control capabilities of the greenhouses are more stable and reasonable, and the work efficiency is improved. It is higher and does not require too much manual operation. You only need to press the switch of the distribution cabinet. Looking at the agricultural production in some backward areas ten years ago and even now, this is a great progress for our country's facility agriculture. Secondly, our multi-span greenhouses can be equipped with mechanized automatic sprinkler irrigation, integrated water and fertilizer machines, automated seeders, and even Internet of Things control software. These are now very common systems, which greatly improves production efficiency and enables precise irrigation and fertilization, as well as water conservation. Fertilizer saving, soilless cultivation, etc. protect the soil from pollution. However, there is blind obedience when it comes to the style and selection of multi-span greenhouses. So today I will give you a brief analysis on how to choose three types of multi-span greenhouses.

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1. Film multi-span greenhouse

Film multi-span greenhouses are also called arched multi-span greenhouses. The advantages of this style of multi-span greenhouses are economical cost, simple installation structure, and fast construction speed. The disadvantage is that it is covered with a film. The life of ordinary films is between three and five years. After a few years, the film material needs to be replaced. The ability to withstand wind and snow is poor in northern areas.

However, film multi-span greenhouses are mainly used for seedling cultivation, vegetable cold sheds, grape and kiwi rain shelters, and flower planting sheds in northern my country (flower sheds mostly use double-film structures). In the southern region, they can be used as vegetable production sheds all year round.

2. Sunshine panel multi-span greenhouse

The multi-span greenhouse with solar panels is a greenhouse style with the top and sides covered with solar panels. The advantages of this type of multi-span greenhouse are strong wind and snow resistance, high degree of automation, good thermal insulation performance, and strong wind and snow resistance. The disadvantage is that the solar panels are made of plastic. The service life of ordinary national standard panels is ten years, and the panels will need to be replaced at that time.

Sun panel greenhouses are commonly used in northern areas and can be used for vegetable and flower planting, seedling raising, soilless cultivation, picking, eco-tourism, etc.

3. Glass multi-span greenhouse

The advantages of a glass greenhouse are that it is fully covered with glass, has good light transmittance, has a long service life, and can last for more than twenty years under normal maintenance. It has stable chemical properties and the light transmittance will not decay over time. High-end greenhouses in the Netherlands all use textured glass greenhouses. Their ultra-long service life is evenly divided into annual costs, which are actually not much higher than those of film and solar panel greenhouses. The disadvantage is that the initial investment is large, and the energy consumption for winter production in northern areas is higher.

The use of glass greenhouses in the north can be used for seedling cultivation, soilless cultivation, high-end medicinal material planting, flower planting, ecological restaurants, and comprehensive sightseeing and tourism. In the south, it can be used as a year-round fruit and vegetable production greenhouse. In recent years, our country has introduced and independently built some glass greenhouses, some of which have achieved good results and are profitable, while others have not fully developed due to sales or technical problems in the industrial chain, which has also led to some glass greenhouses being abandoned or used as The use of ordinary sheds does not bring out its advantages.

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